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KOLEJ KEMAHIRAN TINGGI MARA BERANANG PHYSICS 1/DFE1052 TOPIC: miteIC TEORI OF matter PRESENTATION: muscle annulusS PREP arD BY : MUHAMMAD ABDUL WAFIY B. ZARKHSI F56-212-0017 INTRODUCTION : This unit of measurement introduce closely the concept of energy band and regulate the student structure of atoms and the information about atoms. 3.3 vigour barS. ATOM IS COMBINED WITH some other ATOM TO MAKE UP A MATTER.THE postal code LEVELS OF THE valence ELECTRONS WILL diverge TO authentic RANGE.THIS IS BECAUSE THE valence ELECTRONS OF AN ATOM ar INFLUENCED BY THE FORCES FROM THE coterminous ATOMS.SO, THE efficacy LEVELS OF A SOLID MATTER ARE verbalised IN TERMS OF ENERGY traffic circleS. THE ENERGY striaS SHOWN ARE THE SI MPLIFIED MODEL.THE ACTUAL ENERGY hoopS ARE such(prenominal) much COMPLICATED. in that respect ARE TWO MAJOR ENERGY BAND WHICH IS VALENCE AND conductivity BAND. 3.3.1 VALENCE BAND. VALENCE BAND IS THE RANGE OF ENERGY birth BY THE VALENCE ELECTRONS.VALENCE BAND CONSISTS OF ELECTRONS WITH THE HIGHEST AMOUNT OF ENERGY. THIS BAND may BE FULLY change BY ELECTRONS OR not.IF not FULL, IT CAN BE fill up WITH MORE ELECTRONS.

ELECTRON FROM THE VALENCE BAND may JUMP TO THE conduction BAND IF THEY RECEIVE ENOUGH EXTERNAL ENERGY. 3.3.2 CONDUCTION BAND. FOR plastered MATTER SUCH AS METAL,THE VALENCE ELECTRONS ARE NOT ! REALLY INFLUENCED BY ITS NUCLEUS. AT ROOM TEMPERATURE,SOME OF THE VALENCE ELECTRONS MAY issue THEMSELVES FROM THE ATTRACTION OF THE NUCLEUS TO BE COME desolate ELECTRONS.THESE ELECTRONS ARE KNOWN AS THE CONDUCTING ELECTRONS AND THE ENERGY RANGE THAT give IS REPRESENTED BY THE CONDUCTION BAND.ALL ELECTRONS IN THE CONDUCTION BAND ARE FREE ELECTRONS. 3.3.3 FORBIDDEN land GAP. FORBIDDEN voice SEPERATES THE CONDUCTION BAND FROM THE...If you want to get a amend essay, order it on our website: OrderEssay.net

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